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Finding the Fourth Proportional to 79,693.66, 109,965.56 and 45,233.07

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Solution

The fourth proportional to 79,693.66, 109,965.56 and 45,233.07 is: 62,415.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,693.66 : 109,965.56 = 45,233.07 : x
  2. Step 2: Convert to fraction form
    79,693.66/109,965.56 = 45,233.07/x
  3. Step 3: Cross multiply
    79,693.66x = 109,965.56 × 45,233.07
  4. Step 4: Simplify right side
    79,693.66x = 4,974,079,873.07
  5. Step 5: Solve for x
    x = 4,974,079,873.07/79,693.66
  6. Step 6: Final answer
    x = 62,415.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.